Occasional ContributorI have a board with two Cyclone V devices on it and both have dual ARM processors in them. When I connect to my JTAG chain with DS-5, it happily connects to one of them but how do I now which one? And how do I make it connect to the other one? I don't see any way to enumerate the chain (like Quartus does) and select the chip to use.
Frequent ContributorHello Dzar,
Kindly note that this is not a standard support issue, since it is a rare case that 2 FPGA's on the same board with one JTAG connection.
May I know if you are using one USB blaster or 2 on board?
Furthermore, I would like to see the output of jtagconfig -n (you can run it in SoC EDS command shell).
usually from DS5, go to Debug configuration > Bare Metal Debug > Browse > and lets see how the JTAG chain view these FPGAs.
Once you select which FPGA, you can select which ARM you want. You cannot view 4 ARMs on the same time since one FPGA should be selected.
Thanks
New ContributorThanks for the quick reply FJumaah,
We are using one USB-Blaster-II.
> jtagconfig -n
1) USB-BlasterII [1-7]
4BA00477 SOCVHPS
4BA00477 SOCVHPS
The screen in the Connection Browser is attached.
It sounds like you were expecting to get a list of the JTAG chain's devices.
Frequent ContributorOccasional ContributorRemoved private reply...
Frequent ContributorHello,
So from the snapshots above, jtagconfig -n can view 2 FPGA devices, while DS-5 is showing one only.
For the schematics of our Cyclone V SoC development kit, there is a DIP switch that should be set correctly in order to make devices available on chain. In your case, its only DS-5 which cannot see the second FPGA.
Have you tried booting HPS on both boards? We need to make sure both HPS devices are working.
In the mean time, I will check with our internal team if there is a known issue regarding this.
Thanks
New ContributorFJumaah,
This is not a development board, it is a custom board. There are no DIP's. ;)
It is also not two boards, it is one board with multiple SOC's.
Making sure both HPS's work is a good idea. I think we can configure the board to only have one SOC on the jtag chain at a time. I'll talk it over with our board guy and let you know the results.
Also note: We don't have a DSTREAM, just a USB-Blaster II. And this is a bare-metal system. We've not been able to boot our code yet due to other issues.
New ContributorHi,
It is an external USB-Blaster II.
We can program Both FPGA's, but they are on a different chain. We have not yet tried to program the FPGA, then tried to connect to the Arms, if that is what you are suggesting.
Thanks.
